Japan's Princess Kako, the second daughter of Prince Akishino and Princess Kiko, in full dress leaves the Imperial Palace in Tokyo after meeting with the emperor and empress on December 29, 2014. Kako, a granddaughter of Emperor Akihito and Empress Michiko, celebrated her 20th birthday on December 29.    AFP PHOTO / Toru YAMANAKA        (Photo credit should read TORU YAMANAKA/AFP/Getty Images)